package
	{
		import flash.display.Sprite;
	
		public class Calculator extends Sprite
		{
			public var stack:Vector.<Number>;
		
			public function Calculator(){
				stack = new Vector.<Number>();
			}
		
			public function push(n:Number):void{
				stack.push(n);
			}
		
			public function divide():Number{
				return stack[0] / stack[1];
			}
		
			public function add():Number{
				return stack[0] + stack[1];
			}
		}
	}

	package features.step_definitions
	{
		import com.furusystems.logging.slf4as.global.debug;
	
		import flash.display.Sprite;
	
		import org.flexunit.Assert;
		import org.flexunit.asserts.fail;
		import org.hamcrest.assertThat;
		import org.hamcrest.core.not;
		import org.hamcrest.object.equalTo;
		public class Calculator_Steps
		{
			private var _calculator:Calculator;
			private var _calculatorResult:Number;
		
			public function Calculator_Steps()
			{
				_calculator = new Calculator();
			}
		
			[Given(/^I have entered (\d+) into the calculator$/g)]
			public function pushNumber( n:Number ):void
			{
				_calculator.push( n );
				debug( "Calculator_Steps : pushNumber :",n);
			}
		
			[When(/^I want it to (\w+)$/)]
			public function pressButton( button:String ):void
			{
				debug( "Calculator_Steps : pressButton :",button);
				if( button == "divide" )
			        {
				        _calculatorResult = _calculator.divide();
			        }
			        else if( button == "add" )
			        {
				        _calculatorResult = _calculator.add();
			        }
                          else
                          {
                                  throw new Error("Unknown operation : " + button);
                          }
			}
		
			[Then(/^the current value should be (.*)$/)]
			public function checkValue( value:Number ):void
			{
				debug( "Calculator_Steps : checkValue :",value);
			
				//Manual check
				if (_calculatorResult != value) 
				{
					throw new Error("Expected " + value + ", but got " + _calculatorResult);
				}
				
				//Hamcrest check
				assertThat( value, equalTo( _calculatorResult ) );
			}
		
			public function destroy():void
			{
				debug("Calculator_Steps : destroy");
				_calculator = null;
			}
		}
	}